Core reenforcement of music rolls



E. G. CLARK.

CORE REENFORCEMENT OF MUSIC ROLLS. APPLICATION FILED -OCT. 20, 1920.

1 $07,784. I Patented Feb. 28, 1922.

I ifgal,

JNVENTOR IEA TTORNE Y6 onrrsn STATES PATENT OFFICE.

ERNEST GLCLARK, OF DE KALB, ILLINOIS,

ASSIGNOR TO CLARK ORCHESTRA ROLL COMPANY, OF DE KALB, ILLENOIS, A CORPORATION OF ILLINOIS.

CORE REENLFORCEMENT OF MUSIC ROLLS.

Specification of Letters Patent.

Patented Feb. 28, 1922.

Application filed October 20, 1920. Serial No. 418,219.

pose of the invention being to makea more satisfactory spool for that purpose of cheaper construction, including means for reeniforcing the core ends thereof and pro-- viding such reeniorcement with means for mounting and driving the spool and having certain other features, shown and described as pointed out in the claims.

ln the drawings:

Figure l is a view in part section show- 7 ing one embodiment of the invention.

Figure 2, is an enlarged viewin part section of one end of the same.

Figure 3 is an end view of the sgool with the reeniorcement applied thereto Figure 4 is a view similar to Figure 2 but oi a modified form.

Figure 5 is an end view of a. portion of the spool with themodilied form of reenlorcement applied thereto.

in this spool the core or shell, 1, is made of fibre or wood pulp or the like and preferably of comparatively thin stock or material so as not to be excessively heavy, and mold ed in cylindrical form.

This core, in'the course of manufacture is made of indefinite length and prepared for the present purpose by cutting it into lengths of desired dimensions, resulting in a hollow cylinder with open ends.

It is desired to reenforce this cylinder, particularly at the ends and also to form such reeniorcing devices so as to provide means for mounting it and the perforated controlling-sheet which is wound upon it,

between the usual supporting and operating spindles. V

The reenforcing devices here employed consist of disks, 22, of tin or other like metal and centrally apertured at 3 for the reception of the spindles mentioned and each disk, cup-shaped as shown, has a peripheral flange, 4, of a depth suitable for seci'irement to the end of the shell, 1, and may be glued or cemented in position, The disks orbottoms are as shown, positioned wnhin the shell with the flange, 4;, turned outward and terminating flush with the eX- lircme endsjthereott, with the bottom innermost; in other words. each disk or bottom is spaced back from the end of the shell a distance equal to the'depth of the flange, 4E.

The purpose of positioning the flange,

i, that is outwardly, is to afford space within the boundary of the length of the shell and within the diameter oi the flange wherein to accommodate means for imparting positively a rotating motion from one of the spindles" to the shell. The motion-receiving elemenhconsists of a key or rib struck in from themetal of the reenliorcement which is adapted to be engaged by a co-'opcrating part of the driving spindle.

in the form shown inl igures 1, 2 and 8, this rib is produced by forming the flange, 4t, with an iii-curving portion at 5, while in the modified form shown in Figures 4 and portion of the metal is struck inward at 6 in the angle formed by the flange, F, and the disk, 2*. In this form the metal struck in from the disk, 2*, is designed to sub stantially equal in depth the extent of intrusion ofthe key or rib, 5, shown in the previous figures.

in either instance the rib or key is struck out of, and integral with, the reenforcing element.

To further guard the extreme ends of the shell. against mutilation in handling, the flange, 4, which extends in the direction of the ends of the core, terminates in a slight radial flange whose extent is substantially equal to the thickness of the material of the shell; This flange further operates as a guide in assembling the parts by limiting the intrusion'of the reentorcement in the shell.

- It will be seenthat a musicroll spool constructed in accordance with the foregoing description, is economical, practical and easily assembled.

I claim 1. A music roll core comprising a tubular cylindrical shell, and a reeniorcement for the end thereof consisting of a transverse web or disk having a cylindrical marginal flange adapted to telescope into the end of the shell, and having also an eccentricallysituated abutment for engagement of the rotating means, said abutment projecting into the cavity bounded by the flange.

2. In the construction defined in claim 1, foregoing, the abutment for rotating being situated in the angle between the cylindrical flange and the web of said reenforcing member. v

3. In the construction defined in claim 1, foregoing, the reenforcing' member being sheet metal and the abutment for rotating being struck inwardly into the cavity bounded by the cylindrical flange.

4;. In the construction defined in claim 1, foregoing, the reenforccment being sheet metal and the abutment for driving being struck from the sheet metal inwardly with respect to the cavity boundedby the flange atthe angle between the flange and'the web of said reenforcement.

5. A music roll core comprising a shell, a metallic cup-shaped reenforcement within and at the end thereof, said reenforc'emeut consisting of a centrally apertured disk havmg a circumferential flange projecting at right angles thereto, and a key formed in- 7. A music roll core comprising a shell, a

metallic reenforcing disk having an annular flange and a key formed by drawing in a portion of the metal of the flange toward the center of the spooL- v In testimony whereof I have hereunto set my hand at De Kalb, Illinois, this 16th day of October,;l920.

nnmisr e. oLARK. 

